Frost prevention means



T. GUGLIOTTA FROST PREVENTION MEANS Aug. 5, 1952 Filed July 19 1951INVENTOR'- THOMAS 'GUGL IOTTA Patented Aug. 5, i952 irnos;."r'l'raEVENTI0N` MEANS `FI`homasY Gugliotta, Norwood, Mass.

v "i jjziplicatinrfnnyis, 195,1, semina 237,603

1 The present invention relates to a window frame and more particularlyto a window frame of the type commonly employed on self propelledvehicles.

The primary object of the present invention is to inhibit the deposit offrost on a window pane and to melt any frost that may gather thereon.

Another object of the present invention is to employ the heat generatedby the engine of a self propelled vehicle and to circulate heated air touniformly heat the entire area of the window.

The above and other objects may be attained by employing this inventionwhich embodies among its features a panel of transparent material havingspaced passages extending therethrough between opposite side facesthereof, a tubular frame extending around the perimeter of the panel,and means opening into the panel to circulate heated air and or heatedfluid therethrough.

Other features include clips carried by opposite edges of the panel andsprings carried by the clips and engaging the frame to yieldinglysuspend the panel in the frame.

Figure 4 is a sectional View takenon line 4-4 'of Figure 2.

Figure 5 is an enlarged View of one of the clips and resilient means,and

Figure 6 is a schematic view showing the dev vice connected to a heatgenerator mounted on the exhaust manifold of a conventional vehicleengine and also illustrating a second window frame connected in thesystem.

Referring to the drawing in detail a window pane embodying the featuresof this invention designated generally Il! includes a panel I2 oftransparent material, such as glass, having extending therethroughpassages I4 which lie between opposite sides of the panel I2.

Encompassing the perimeter of the panel I2 is a tubular frame I6 whichis preferably formed of light copper tubing which may be of circularconfiguration as shown in Figure 3, or of substantially ellipticalconfiguration as shown in cross section Figure 4, the sides I6 of theframe I6 being recessed in the side edges of the panel I2.

If desired passages I4 may be provided in the panel I2 and adapted tocommunicate with similar openings I3 in the sides I6 as shown in Figure4.

Opening into the bottom frame I6 adjacent one side thereof is a tubularduct I8 carrying a manually actuated valve 20 by means of which thepassage through the duct I8 may be closed. A discharge nipple I1 iscarried by the top of the frame I6 and is curved inwardly to direct intothe vehicle heated air which has passed through the frame.

Lying adjacent the bottom of the tubular frame I6 is a conduit 22carrying at one end a nipple 244 to which is connected a drain valve 26.This nipple is connected by means of a tube 28 to a suitable dischargepipe (not shown). The conduit 22 has a lateral opening 30 which mateswith a similar lateral opening in the bottom of the tubular frame I6 soas to establish communication between the interior of said tubular frameand the interior of the conduit. A heat gage 32 is coupled to theconduit 22 adjacent the end thereof remote from the nipple 24 andopening into the top of the tubular frame I6 is a nipple which may beused as a discharge pipe to direct heated air into the interior of avehicle or may be connected to another window in the body of the vehicleof similar construction.

Mounted on the exhaust manifold of the engine of the vehicle in whichthis improved window is used is a hood 34 having an open front end, andconnected to the rear end of the hood is a exible duct 36 which leads toand is connected with the valve 20. A motor driven fan 38 may be mountedin the hood 34 to force air through said hood 34 and into the frame I6.

In order to yieldingly support the transparent kpanel I2 in the tubularframe I' I mount on the edge of the panel I2 at spaced points clips 4Ucarrying compression coiled springs 42 which bear 0n the frame as willbe readily understood from viewing Figure 2, and the enlarged viewFigure 5.

In use, with the valve 20 open and the engine of the vehicle running,thev exhaust gases passing through the exhaust manifold will heat thelatter and hence-air entering the front open end of the hood 34 will beheated and conveyed to the interior of the tubular frame I'B to bedischarged therefrom through the discharge nipple I'I. Obviously thedischarge nipple I1 may be coupled as by a flexible duct 44 to asimilarly constructed 3 Window in the vehicle. Should a fastercirculation of air through the frame I6 be desired the fan 38 is set inmotion. As the heated air passes through the tubular frame I6, the metalthereof becomes heated and radiates into the surrounding atmospherewhich is conducted through the passages I4 to Warm the transparent panelI2 and thus prevent the collection of frost thereon.

I Wish to have it understood that minor changes in detailandconstruction of the various parts may be made Without departing from thevspirit of the invention, the scope of which is set forth in theappended claim.

What is claimed is:

A condensation prevention means comprsingva panel of transparentmaterial having; aphlrality of parallel spaced passages extendingthere-Y through, a tubular vapor conductingframeen? compassing theperimeter of the panel, said .para Y allel passages communicating Withsaid tubular frame, a discharge nipple carried by and com- REFERENCESCITED The following references are of record in the le of this patent: vf` UNIEIED STATES Number l Name Date 1,403,335 Marchalonis Jan. 10, 19221,465,292 Wessig Aug. 21, 1923 1:7521'61'5" Roof Apr. 1, 1930 1,793,039YYetter Feb. 17, 1931 2,011,557 Anderegg Aug. 20, 1935 2,212,035 Ericksonet al Aug. 20, 1940 2,304;691 Hund Dec. 8, 1942 2,389,704

Villani NOV. 27, 1945

